CVE-2026-27784

The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://my.f5.com/manage/s/article/K000160364	Mitigation Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:10065
https://access.redhat.com/errata/RHSA-2026:13634
https://access.redhat.com/errata/RHSA-2026:13680
https://access.redhat.com/errata/RHSA-2026:13839
https://access.redhat.com/errata/RHSA-2026:14836
https://access.redhat.com/errata/RHSA-2026:15942
https://access.redhat.com/errata/RHSA-2026:15943
https://access.redhat.com/errata/RHSA-2026:15945
https://access.redhat.com/errata/RHSA-2026:15966
https://access.redhat.com/errata/RHSA-2026:6906
https://access.redhat.com/errata/RHSA-2026:6907
https://access.redhat.com/errata/RHSA-2026:6923
https://access.redhat.com/errata/RHSA-2026:7002
https://access.redhat.com/errata/RHSA-2026:7343
https://access.redhat.com/errata/RHSA-2026:8346
https://access.redhat.com/security/cve/CVE-2026-27784
https://bugzilla.redhat.com/show_bug.cgi?id=2450785
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27784.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:f5:nginx_open_source::::::::
	cpe:2.3:a:f5:nginx_open_source::::::::

History

No history.

Information

Published : 2026-03-24 15:16

Updated : 2026-07-15 02:19

NVD link : CVE-2026-27784

Mitre link : CVE-2026-27784

CVE.ORG link : CVE-2026-27784

JSON object : View

Products Affected

f5

nginx_open_source

CWE

CWE-190

Integer Overflow or Wraparound

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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "versions": [{"status": "unaffected", "version": "2:1.26.3-1.el10_0.8", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "8100020260401080144.489197e6", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx:1.24", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": 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["cpe:/a:redhat:rhel_e4s:9.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "1:1.20.1-10.el9_0.3", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "1:1.20.1-14.el9_2.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Extended Update Support", "versions": [{"status": "unaffected", "version": "1:1.20.1-16.el9_4.5", "lessThan": "*", "versionType": 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Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "9060020260504194843.9", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx:1.24", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "9060020260504154614.9", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx:1.26", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:hummingbird:1"], "vendor": "Red Hat", "product": "Red Hat Hardened Images", "versions": [{"status": "unaffected", "version": "1.30.0-1.hum1", "lessThan": "*", "versionType": "rpm"}], "packageName": "nginx-main", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1776868774", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/cds-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhui:5::el9"], "vendor": "Red Hat", "product": "Red Hat Update Infrastructure 5", "versions": [{"status": "unaffected", "version": "1776868842", "lessThan": "*", "versionType": "rpm"}], "packageName": "rhui5/rhua-rhel9", "collectionURL": "https://catalog.redhat.com/software/containers/", "defaultStatus": "affected"}]}], "published": "2026-03-24T15:16:33.350", "references": [{"url": "https://my.f5.com/manage/s/article/K000160364", "tags": ["Mitigation", "Vendor Advisory"], "source": "f5sirt@f5.com"}, {"url": "https://access.redhat.com/errata/RHSA-2026:10065", "source": 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"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:6907", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:6923", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:7002", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:7343", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:8346", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-27784", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2450785", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27784.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "f5sirt@f5.com", "description": [{"lang": "en", "value": "CWE-190"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "The 32-bit implementation of NGINX Open Source has a vulnerability in the ngx_http_mp4_module module, which might allow an attacker to over-read or over-write NGINX worker memory resulting in its termination, using a specially crafted MP4 file. The issue only affects 32-bit NGINX Open Source if it is built with the ngx_http_mp4_module module and the mp4 directive is used in the configuration file. Additionally, the attack is possible only if an attacker can trigger the processing of a specially crafted MP4 file with the ngx_http_mp4_module module. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}, {"lang": "es", "value": "La implementaci\u00f3n de 32 bits de NGINX Open Source tiene una vulnerabilidad en el m\u00f3dulo ngx_http_mp4_module, lo que podr\u00eda permitir a un atacante leer en exceso o sobrescribir la memoria del proceso worker de NGINX, lo que resultar\u00eda en su terminaci\u00f3n, utilizando un archivo MP4 especialmente dise\u00f1ado. El problema solo afecta a NGINX Open Source de 32 bits si est\u00e1 compilado con el m\u00f3dulo ngx_http_mp4_module y la directiva mp4 se utiliza en el archivo de configuraci\u00f3n. Adem\u00e1s, el ataque es posible solo si un atacante puede desencadenar el procesamiento de un archivo MP4 especialmente dise\u00f1ado con el m\u00f3dulo ngx_http_mp4_module.\n\nNota: Las versiones de software que han alcanzado el Fin de Soporte T\u00e9cnico (EoTS) no se eval\u00faan."}], "lastModified": "2026-07-15T02:19:10.063", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "510D19AC-5184-437F-B196-1454B33B6E49", "versionEndExcluding": "1.28.3", "versionStartIncluding": "1.1.19"}, {"criteria": "cpe:2.3:a:f5:nginx_open_source:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0EFE28B-E8E5-464E-B407-96436CA87C8E", "versionEndExcluding": "1.29.7", "versionStartIncluding": "1.29.0"}], "operator": "OR"}]}], "sourceIdentifier": "f5sirt@f5.com"}